[Merge] ~slyon/ubuntu/+source/systemd:slyon/resolved-segfault-root-cause into ~ubuntu-core-dev/ubuntu/+source/systemd:ubuntu-hirsute

[Lukas Märdian]

It passes the autopkgtest: https://autopkgtest.ubuntu.com/results/autopkgtest-hirsute-slyon-testing/hirsute/s390x/s/systemd/20210920_131017_85656@/log.gz
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https://code.launchpad.net/~slyon/ubuntu/+source/systemd/+git/systemd/+merge/408886
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